- #1
Clever_name
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Homework Statement
see link for a picture of the situation, http://i50.tinypic.com/n5g3z5.jpg
Homework Equations
(1/2)mv^(2) , (1/2)k*l^(2)
The Attempt at a Solution
Total energy of the system at the given point of time is
mv^(2)/2+kl^(2)/2 = 0.6*100/2+100*0.25/2 = 30+12.5 = 42.5 J
At the maximum and minimum values of l, v = 0
=> kl2/2 = 42.5
=> l = √(85/k)
=> l = ±0.922 m
maximum l = 0.922m and minimum l = -0.922m
Not terribly confident in this approach however, any guidance would be appreciated. Thanks!